<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<div id="header"></div>
		<div class="title">相同的类名，我是14px about</div>
		<div id="about">
			关于我们
		</div>
		<div id="main"></div>
		<div id='footer'></div>
	</body>
</html>
